Heat sink fins



FIG. 1 is a side perspective view of the heat sink fins showing our newdesign;

FIG. 2 is a side perspective view thereof, opposite of that shown inFIG. 1;

FIG. 3 is an end view thereof;

FIG. 4 is end view thereof, opposite of that shown in FIG. 3; and,

FIG. 5 is a bottom view thereof.

The portions shown in phantom lines are for showing environment only anddo not form any part of the claimed design.

The ornamental design for heat sink fins, as shown and described.